#Taylor-Proudman theorem

[fuckyeahfluiddynamics]

How Magnetic Fields Shape Core Flows

The Earth's inner core is a hot, solid iron-rich alloy surrounded by a cooler, liquid outer core. The convection and rotation in this outer core creates our magnetic fields, but those magnetic fields can, in turn, affect the liquid metal flowing inside the Earth.  (Image credit: C. Finley et al.; research credit: A. Pothérat et al.; via APS Physics) Read the full article